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Product Specifications:
| Item | Ball Cone Spring Check Valve |
| 3-a Certified | Not Rated |
| Body Material | Polypropylene |
| Check Mechanism | Poppet |
| Connection Gender Side 2 | Female |
| Connection Gender-side 1 | Female |
| Connection Size-side 1 | 1/2" |
| Connection Size-side 2 | 1/2" |
| Connection Type | FNPT x FNPT |
| Connection Type-side 1 | NPT |
| Connection Type-side 2 | NPT |
| Cracking Pressure | 0.33 psi |
| For Media | Air, Fluids |
| Hex Size | 1 1/8" |
| Length | 2 1/2" |
| Material | Glass Filled Polypropylene |
| Max. Operating Temp. | 140°F |
| Max. Pressure (cwp) | 125 psi |
| Max. Pressure-steam | Not Rated |
| Max. Temp. | 140°F |
| Max. Water Pressure | 125 psi |
| Media Temp. | -20°F to +140°F |
| Min. Operating Temp. | -20°F |
| Mounting Orientation | Horizontal, Vertical |
| Mounting Position | Horizontal, Vertical |
| Overall Height | 1.437" |
| Overall Length | 2.5" |
| Pipe Size | 1/2" |
| Poppet Material | Polypropylene |
| Seal Material | FKM |
| Seat Material | Glass Filled Polypropylene |
| Silent Check | Standard |
| Size | 1/2" |
| Spring Material | Stainless Steel |
| Vacuum Service Rating | Not Rated |
| Valve Body Style | Inline |
| Valve Series | 685 |
| Width | 1.437" |
Shipping Info:
| Ship weight (kg) | 0.03 |
| Ship height (cm) | 4.32 |
| Ship length (cm) | 13.97 |
| Ship width (cm) | 14.48 |
| HS code | 8481301090 |
| Country of Origin | US |
Product Variants
| Product | Model | Size | Overall Height | Hex Size | Connection Size-side 1 | Connection Size-side 2 | Valve Series | Flow Coefficient | Seat Material | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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FP CHK 694-4F4F-B | 1/4" | 1.234" | 1 1/4" | 1/4" | 1/4" | 694 | 2.3 | Glass Filled Polypropylene | €30.73 | |
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FP CHK 694-4F4F-F | 1/4" | 1.234" | 1 1/4" | 1/4" | 1/4" | 694 | 2.3 | Glass Filled Polypropylene | €31.37 | |
![]() |
FP CHK 693-6F6F-B | 3/8" | 1.234" | 0.938" | - | - | - | - | Glass Filled Polypropylene | €30.88 | |
![]() |
FP CHK 693-6F6F-F | 3/8" | 1.234" | 15/16" | 3/8" | 3/8" | 693 Series | 4.2 | Glass Filled Polypropylene | €32.14 | |
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FP CHK 685-8F8F-B | 1/2" | 1.437" | 1 1/8" | 1/2" | 1/2" | 685 | - | Glass Filled Polypropylene | €30.80 | |
![]() |
FP CHK 687-12F12F-B | 3/4" | 1 3/8" | 15/16" | 3/4" | 3/4" | 687 | - | Glass Filled Polypropylene | €35.93 | |
![]() |
FP CHK 687-12F12F-F | 3/4" | 1 3/8" | 15/16" | 3/4" | 3/4" | 687 | - | Glass Filled Polypropylene | €65.65 |
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SMC VALVES FP CHK 685-8F8F-F Ball Cone Spring Check Valve 1/2 Inch
€55.43 /unit
